bark-mcp

A Model Context Protocol (MCP) server that connects to Bark, a notification server for iOS. This allows LLM applications to send notifications to iOS devices through the MCP standard.

Features

Simple MCP server implementation using FastMCP
Single tool: notify to send notifications to iOS devices
Configurable via environment variables
Easy to use command-line interface

Installation

# Install from PyPI
pip install bark-mcp

# Or install from source
git clone https://github.com/yourusername/bark-mcp.git
cd bark-mcp
pip install -e .

Configuration

The server requires the following environment variables:

BARK_SERVER_URL: URL of the Bark server (e.g., https://api.day.app)
BARK_API_KEY: Your Bark API key/device key

You can set these variables in your environment or create a .env file:

BARK_SERVER_URL=https://api.day.app
BARK_API_KEY=your_api_key_here

Bark API Format

The server uses the Bark API with the following URL formats:

GET /{bark-key}/{title}/{content}?url={url} (when title and URL are provided)
GET /{bark-key}/{title}/{content} (when only title is provided)
GET /{bark-key}/{content} (when only content is provided)

Usage

Command Line

Start the MCP server using either of these commands:

# Using the standard command (after installing the package)
bark-mcp

# Using uvx (runs without installing the package)
uvx bark-mcp

Both commands support the same options:

# Specify a .env file
bark-mcp --env-file /path/to/.env
# or
uvx bark-mcp --env-file /path/to/.env

# Enable debug logging
bark-mcp --debug
# or
uvx bark-mcp --debug

Note: uvx is a command from the uv package manager that runs Python tools in temporary, isolated environments without installing them permanently. Install it with pip install uv.

Important: Make sure to use uvx bark-mcp with a hyphen, not uvx bark_mcp with an underscore. The command name must match the entry point defined in the package.

Using with MCP Clients

The server provides a single tool:

notify: Send a notification to an iOS device
- Parameters:
  - title (optional): Title of the notification
  - content (required): Content of the notification
  - url (optional): URL to open when the notification is tapped

Example usage in an MCP client:

# This would be handled by the MCP client
result = await call_tool("notify", {
    "title": "Hello from MCP",
    "content": "This is a notification sent via MCP",
    "url": "https://example.com"
})

Development

Prerequisites

Python 3.8+
FastMCP
Requests
Python-dotenv

Running Tests

# TODO: Add testing instructions

Troubleshooting

Command Not Found

If you see an error like:

The executable `bark_mcp` was not found.
warning: An executable named `bark_mcp` is not provided by package `bark-mcp`.

Make sure you're using the correct command name: bark-mcp with a hyphen, not bark_mcp with an underscore.

Environment Variables Not Set

If you see errors about missing environment variables:

BARK_SERVER_URL environment variable is required

Make sure to:

Create a .env file based on the .env.example template
Set the required environment variables in your shell or use the --env-file option

License

This project is licensed under the MIT License - see the LICENSE file for details.

License

ttthree/bark-mcp

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